Walk-behind grinder



FIG. 1 is a perspective view of the walk-behind grinder of the present invention;

FIG. 2 is a front view of the walk-behind grinder shown in FIG. 1;

FIG. 3 is a rear view of the walk-behind grinder shown in FIG. 1;

FIG. 4 is a left side view of the walk-behind grinder shown in FIG. 1;

FIG. 5 is a right side view of the walk-behind grinder shown in FIG. 1;

FIG. 6 is a top view of the walk-behind grinder shown in FIG. 1; and,

FIG. 7 is a bottom view of the walk-behind grinder shown in FIG. 1.

The broken lines shown in drawings show portions of the walk-behind grinder and form no parts of the claimed design. 

CLAIM The ornamental design for the “walk-behind grinder,” as shown and described. 